Lubricating compound.



UNITED STATES PATENT GFFIGE.

CLYDE W. ADAMS, OF NEW YORK, N. Y.

, AssIGNoRfBY MESNE ASSIGNMENTS, 'ro

ADAMS GREASE & OIL COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

LUBRICATING COMPOUND.

No Drawing.

To all whom it may concern;

Be it known that I, CLYDE W. Anaus, a citizen of the United States,.and a resldcnt of New York city, in the county of New York and State of New York, have invented a certain new and useful Composition of Matter to be Used as a Lubricating Compound, of which the following is a specification.

This invention relates to a composition of matter to be used as a lubricating compound for general purposes. I have found in practice that it is particularly efficient in transmission gears, differential gears, clutches, timing gears, and as an axle grease and, in fact, wherever it is desired to reduce the friction by means of a lubricating compound. It is also particularly advantageous in lubricating the gears of power driven vehicles such as automobiles, but it is to be distinctly understood that my invention is not confined to this or any other particular use for it is adapted for general application.

My lubricating compound consists essentially of comminuted mica, a heavy lubrieating oil and a grease. I also preferably, though not necessarily, add a minimal amount of sulfur which renders the composition more advantageous in use. What I consider to be the best proportion of these different ingredients, but to which my invention is not to be limited, is the following: 4A;% mica; heavy lubricating oil; grease; and, if sulfur is used, I employ approximately a quarter of one per cent. I have found that for the heavy lubricating oil a suitable cylinder oil may be used which is known in the trade as green oil. For the grease I preferably, though not necessarily, use some form of commercial com pound lubricating grease, such for example as known to the trade as No. 3-}- regular grease. Therefore my lubricating compound is preferably composed of the following ingredients and substantially, though not necessarily, in the proportions given, 449,70 fine comminuted mica (about 200 mesh); 50% heavy lubricating oil, such as cylinder oil (a grade of oil known in the market as green oil); 5% compound lubrieating. grease preferably what is known as No. 3% regular grease; and J; of 1% of pul- Specifieation of Letters Patent.

Application filed July 11,

Patented July 8, 1913.

1910. Serial No. 571,303.

I verized sulfur. These bodies mixed in about the )roportions given produce a lubricant of what may be termed a short or tender consistency; a consistent or nonfluid lubricant which is more wax-like than greasy, having an almost crumbly or friable texture in mass. Its physical character somewhat resembles that of a semi-solid soap, being considerably softer than ordinary hard soap but not being fluid at ordinary temperatures, and not being as viscous as an oil or simple grease. In effect, the lubricant is a composition of mica carrying a heavy, viscous lubricating oil which is given a thickereonsistence by an admixture of the grease. The oil is held by the mica rather than the mica held by the oil. The mica employed is advantageously excessively fine: (as stated, about 200-mesh) as this increases its carrying power; And with the uniformly distributed throughout the body of mica and held there by surface tension. Fine powdered mica will take up about half its weight of even a thinly fluid oil to make a dry composition. Of a thicker oil it will take up somewhat more. The object of the present invention is to make a composition carrying a thick lubricating fluid which is somewhat, but not greatly, in excess of the amount which will be taken up by the mica, thereby giving a lubricant of the physical character described. These are the ingredients and substantially the proportions which I preferably use, though it is to be understood that the pro ortions may be varied, mica of an entire y different mesh may be used, a different kind of heavy lubrieating oil may be employed, and that various kinds of grease may be used I have found in practice that my lubricating compound tends to preserve the transmission ears, increase their life and render them nolseless in operation, all of which is of material advantage wherever the lubris eating compound is employed and particularly if it is used on'the gears of a power driven vehicle such an automobile.

When I refer in the specification to No. 3?; regular grease I refer to a well known article of trade, an analysis of which shows it to be made of the following ingredients 1n proportions of oil and mica used, the oil is Oil of mirbane substantially the proportions given, to

Wit,

Lubricating oil (mineral, specific gravity 0.896) "74.76%

Calcium soap (derived from lard) 18. 02%.

Lard oil 5. 80%

The green oil herein referred to is also a a Well known article of trade and is a natural mineral oil refined. A test shows the following characteristics Gravity 29 Flash test 470 Fire test 525 Cold test 35 Viscosity at 212 90 While I preferably use this No. 3%; regular grease and the green oil referred to and which are usually formed of the ingredients and possessed of the characteristics here set forth, it is to be distinctly understood that these different ingredients and charactercent. heavy lubricating oil and 5 per cent. grease.

2. A lubricating compound including the nearly the same amount of comminuted mica and a residue composed of a grease of the character specified and of sulfur.

5. A lubricating composition consisting of finely ground comminuted mica carrying about an equal amount of a heavy, viscous,

lubricating, oleaginous body, said oleaginous body consisting for the main part of a heavy, lubricating oil with a small amount of consistence-giving grease.

6. A lubricating composition consisting of a finely ground comminuted mica carrying about an equal amount of a heavy, viscous, lubricating, oleaginous body, said oleaginous body consisting of a heavy, lubricating oil with a small amount of consistence-giving grease and sulfur.

. CLYDE W. ADAMS.

Witnesses:

ALFRED E. POOLE, AVERY HIoKEY. 

